From e5e23407c1c1dc4998a6b3bf5ac8bc8b60376351 Mon Sep 17 00:00:00 2001
From: Ori Nimron <orinimron123@gmail.com>
Date: Fri, 20 Sep 2019 09:35:47 +0200
Subject: [PATCH] ax25: enforce CAP_NET_RAW for raw sockets

commit 0614e2b73768b502fc32a75349823356d98aae2c upstream.

When creating a raw AF_AX25 socket, CAP_NET_RAW needs to be checked
first.

Signed-off-by: Ori Nimron <orinimron123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
CVE-2019-17052
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
Change-Id: I4b781c10113621f943df41bb5ed7caf2219ae36f
---
 net/ax25/af_ax25.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index f59c8af13e5..63c83ce3d5b 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -857,6 +857,8 @@ static int ax25_create(struct net *net, struct socket *sock, int protocol,
 		break;
 
 	case SOCK_RAW:
+		if (!capable(CAP_NET_RAW))
+			return -EPERM;
 		break;
 	default:
 		return -ESOCKTNOSUPPORT;